Use Command instead of TabCompleteEvent on Bukkit

CHANGELOG.md

@@ -6,6 +6,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Changed
+ - Use Command instead of TabCompleteEvent on Bukkit
+
 ## [1.4.0] - 2021-01-16
 
 ### Added

cloud-minecraft/cloud-bukkit/src/main/java/cloud/commandframework/bukkit/BukkitCommand.java

@@ -76,6 +76,22 @@ final class BukkitCommand<C> extends org.bukkit.command.Command implements Plugi
         }
     }
 
+    @Override
+    public List<String> tabComplete(
+            final @NonNull CommandSender sender,
+            final @NonNull String alias,
+            final @NonNull String @NonNull [] args
+    ) throws IllegalArgumentException {
+        final StringBuilder builder = new StringBuilder(this.command.getName());
+        for (final String string : args) {
+            builder.append(" ").append(string);
+        }
+        return this.manager.suggest(
+                this.manager.getCommandSenderMapper().apply(sender),
+                builder.toString()
+        );
+    }
+
     @Override
     public boolean execute(
             final @NonNull CommandSender commandSender,

cloud-minecraft/cloud-bukkit/src/main/java/cloud/commandframework/bukkit/CloudBukkitListener.java

@@ -42,37 +42,6 @@ final class CloudBukkitListener<C> implements Listener {
         this.bukkitCommandManager = bukkitCommandManager;
     }
 
-    @EventHandler
-    void onTabCompletion(final @NonNull TabCompleteEvent event) {
-        if (event.getBuffer().isEmpty()) {
-            return;
-        }
-
-        @SuppressWarnings("unchecked")
-        final BukkitPluginRegistrationHandler<C> bukkitPluginRegistrationHandler =
-                (BukkitPluginRegistrationHandler<C>) this.bukkitCommandManager.getCommandRegistrationHandler();
-
-        /* Turn '(/)plugin:command arg1 arg2 ...' into 'plugin:command' */
-        final String commandLabel = (event.getBuffer().startsWith("/")
-                ? event.getBuffer().substring(1)
-                : event.getBuffer())
-                .split(" ")[0];
-        if (!bukkitPluginRegistrationHandler.isRecognized(commandLabel)) {
-            return;
-        }
-
-        final CommandSender sender = event.getSender();
-        final C cloudSender = this.bukkitCommandManager.getCommandSenderMapper().apply(sender);
-        final String inputBuffer = this.bukkitCommandManager.stripNamespace(event.getBuffer());
-
-        final List<String> suggestions = new ArrayList<>(this.bukkitCommandManager.suggest(
-                cloudSender,
-                inputBuffer
-        ));
-
-        event.setCompletions(suggestions);
-    }
-
     @EventHandler(priority = EventPriority.MONITOR, ignoreCancelled = true)
     void onPlayerLogin(final @NonNull PlayerLoginEvent event) {
         /* If the server is brigadier-capable, any registration after players